[preprocessor] Add an opportunity to retain excluded conditional blocks

It is handy for clang tooling, for instance, in source to source transformation.

Reviewers: vpykhtin (Valery Pykhtin), erichkeane (Erich Keane)

Subscribers: rsmith (Richard Smith), akyrtzi (Argyrios Kyrtzidis)

Tags: #clang

Differential Revision: https://reviews.llvm.org/D66597

llvm-svn: 370123

1 files changed, 132 insertions, 0 deletions

diff --git a/clang/test/Index/retain-excluded-conditional-blocks.m b/clang/test/Index/retain-excluded-conditional-blocks.m
new file mode 100644
index 00000000000..ebfc7c5723d
--- /dev/null
+++ b/clang/test/Index/retain-excluded-conditional-blocks.m
@@ -0,0 +1,132 @@
+// RUN: c-index-test -retain-excluded-conditional-blocks %s | FileCheck %s
+
+#include <stdint.h>
+
+// CHECK: TypedefDecl=intptr_t
+
+// CHECK: [[@LINE+1]]:12: ObjCInterfaceDecl=MyCls
+@interface MyCls
+// CHECK: [[@LINE+1]]:8: ObjCInstanceMethodDecl=some_meth
+-(void)some_meth;
+@end
+
+#if 1
+// CHECK: [[@LINE+1]]:12: ObjCInterfaceDecl=Test1
+@interface Test1 @end
+#else
+// CHECK: [[@LINE+1]]:12:
+@interface Test2 @end
+#endif
+
+#if 0
+// CHECK: [[@LINE+1]]:12:
+@interface Test3 @end
+#else
+// CHECK: [[@LINE+1]]:12: ObjCInterfaceDecl=Test4
+@interface Test4 @end
+#endif
+
+#if SOMETHING_NOT_DEFINED
+// CHECK: [[@LINE+1]]:12: ObjCInterfaceDecl=Test5
+@interface Test5 @end
+#else
+// CHECK: [[@LINE+1]]:12: ObjCInterfaceDecl=Test6
+@interface Test6 @end
+#endif
+
+#define SOMETHING_DEFINED 1
+#if SOMETHING_DEFINED
+// CHECK: [[@LINE+1]]:12: ObjCInterfaceDecl=Test7
+@interface Test7 @end
+#else
+// CHECK: [[@LINE+1]]:12:
+@interface Test8 @end
+#endif
+
+#if defined(SOMETHING_NOT_DEFINED)
+// CHECK: [[@LINE+1]]:12: ObjCInterfaceDecl=Test9
+@interface Test9 @end
+#else
+// CHECK: [[@LINE+1]]:12: ObjCInterfaceDecl=Test10
+@interface Test10 @end
+#endif
+
+#if defined(SOMETHING_DEFINED)
+// CHECK: [[@LINE+1]]:12: ObjCInterfaceDecl=Test11
+@interface Test11 @end
+#else
+// CHECK: [[@LINE+1]]:12:
+@interface Test12 @end
+#endif
+
+#if SOMETHING_NOT_DEFINED1
+// CHECK: [[@LINE+1]]:12: ObjCInterfaceDecl=Test13
+@interface Test13 @end
+#elif SOMETHING_NOT_DEFINED2
+// CHECK: [[@LINE+1]]:12: ObjCInterfaceDecl=Test14
+@interface Test14 @end
+#else
+// CHECK: [[@LINE+1]]:12: ObjCInterfaceDecl=Test15
+@interface Test15 @end
+#endif
+
+#ifdef SOMETHING_NOT_DEFINED
+// CHECK: [[@LINE+1]]:12: ObjCInterfaceDecl=Test19
+@interface Test19 @end
+#else
+// CHECK: [[@LINE+1]]:12: ObjCInterfaceDecl=Test20
+@interface Test20 @end
+#endif
+
+#ifdef SOMETHING_DEFINED
+// CHECK: [[@LINE+1]]:12: ObjCInterfaceDecl=Test21
+@interface Test21 @end
+#else
+// CHECK: [[@LINE+1]]:12:
+@interface Test22 @end
+#endif
+
+#ifndef SOMETHING_NOT_DEFINED
+// CHECK: [[@LINE+1]]:12: ObjCInterfaceDecl=Test23
+@interface Test23 @end
+#else
+// CHECK: [[@LINE+1]]:12: ObjCInterfaceDecl=Test24
+@interface Test24 @end
+#endif
+
+#ifndef SOMETHING_DEFINED
+// CHECK: [[@LINE+1]]:12:
+@interface Test25 @end
+#else
+// CHECK: [[@LINE+1]]:12: ObjCInterfaceDecl=Test26
+@interface Test26 @end
+#endif
+
+#if 1 < SOMETHING_NOT_DEFINED
+// CHECK: [[@LINE+1]]:12: ObjCInterfaceDecl=Test27
+@interface Test27 @end
+#else
+// CHECK: [[@LINE+1]]:12: ObjCInterfaceDecl=Test28
+@interface Test28 @end
+#endif
+
+#if SOMETHING_NOT_DEFINED
+// CHECK: [[@LINE+1]]:12: ObjCInterfaceDecl=Test29
+@interface Test29 @end
+#endif
+
+#ifdef SOMETHING_NOT_DEFINED
+// CHECK: [[@LINE+1]]:12: ObjCInterfaceDecl=Test30
+@interface Test30 @end
+#endif
+
+#ifdef SOMETHING_DEFINED
+// CHECK: [[@LINE+1]]:12: ObjCInterfaceDecl=Test31
+@interface Test31 @end
+#elif !defined(SOMETHING_NOT_DEFINED)
+// CHECK: [[@LINE+1]]:12: ObjCInterfaceDecl=Test32
+@interface Test32 @end
+#else
+// CHECK: [[@LINE+1]]:12: ObjCInterfaceDecl=Test33
+@interface Test33 @end
+#endif